在android上播放本地m3u8文件，显示setDataSourceFD失败。

Question

我正在尝试使用android mediaplayer类播放存储在SD卡中的本地m3u8文件。m3u8文件和。ts文件位于同一目录中。第三方播放器（如MXPlayer）加入ts文件，并在我从中打开m3u8时播放视频。但是使用android mediaplayer类会引发以下错误`

无法创建媒体播放器错误：setDataSourceFD失败：状态=0x8000000 java。木卫一。IOException:setDataSourceFD失败：android上的状态=0x8000000。媒体媒体播放器。android上的setDataSource（本机方法）。媒体媒体播放器。com上的setDataSource（MediaPlayer.java:1204）。tcs。hlsvideo。流媒体播放器。在com上播放视频（StreamingPlayer.java:87）。tcs。hlsvideo。流媒体播放器。surfaceCreated（StreamingPlayer.java:148）在android上创建。看法SurfaceView。在android上更新Windows（SurfaceView.java:609）。看法SurfaceView。在android上访问$000（SurfaceView.java:86）。看法SurfaceView 3美元。android上的onPreDraw（SurfaceView.java:178）。看法ViewTreeObserver。android上的dispatchOnPreDraw（ViewTreeObserver.java:707）。看法ViewRootImpl。android上的performTraversals（ViewRootImpl.java:1981）。看法ViewRootImpl。android上的doTraversal（ViewRootImpl.java:1143）。看法ViewRootImpl$TraversalRunnable。在android上运行（ViewRootImpl.java:4667）。看法编舞$CallbackRecord。在android上运行（Choreographer.java:725）。看法编舞android上的doCallbacks（Choreographer.java:555）。看法编舞android上的doFrame（Choreographer.java:525）。看法Choreographer$FrameDisplayEventReceiver。在android上运行（Choreographer.java:711）。操作系统。处理程序。android上的handleCallback（Handler.java:615）。操作系统。处理程序。android上的dispatchMessage（Handler.java:92）。操作系统。活套。android上的loop（Looper.java:137）。应用程序。活动线程。java上的main（ActivityThread.java:4960）。朗。反思。方法java上的invokenactive（本机方法）。朗。反思。方法在com上调用（Method.java:511）。Android内部的操作系统。ZygoteInit$MethodandArgscaler。在com上运行（ZygoteInit.java:1038）。Android内部的操作系统。合子体。dalvik的main（ZygoteInit.java:805）。系统原生艺术。主（本机方法）setDataSourceFD失败：状态=0x8000000

我使用的代码是

private static final String TAG = StreamingPlayer.class.getSimpleName();

private String formatedIpAddress;

private int mVideoWidth;
private int mVideoHeight;
private MediaPlayer mMediaPlayer;
private SurfaceView mPreview;
private SurfaceHolder holder;
private String path;

//private boolean mIsVideoSizeKnown = false;
private boolean mIsVideoReadyToBePlayed = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    mPreview = new SurfaceView(this);
    holder = mPreview.getHolder();
    holder.addCallback(this);
    setContentView(mPreview);

    WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
    int ipAddress = wifiManager.getConnectionInfo().getIpAddress();
    formatedIpAddress = String.format("%d.%d.%d.%d", (ipAddress & 0xff),
            (ipAddress >> 8 & 0xff), (ipAddress >> 16 & 0xff), (ipAddress >> 24 & 0xff));

    Log.d(TAG, formatedIpAddress);

}

private void playVideo() {
    doCleanUp();
    try {

        //local m3u8 file
        path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/ts/prog_index.m3u8";

        if (path == "") {
            // Tell the user to provide a media file URL.
            Toast
            .makeText(
                    this,
                    "Please edit MediaPlayerDemo_Video Activity,"
                            + " and set the path variable to your media file URL.",
                            Toast.LENGTH_LONG).show();
        } 

        Log.e("PATH", "Path = " + path);
        // Create a new media player and set the listeners
        mMediaPlayer = new MediaPlayer();
        //mMediaPlayer.SET
        mMediaPlayer.setDataSource(path);
        mMediaPlayer.setDisplay(holder);
        mMediaPlayer.setOnBufferingUpdateListener(this);
        mMediaPlayer.setOnPreparedListener(this);
        mMediaPlayer.prepare();
        mMediaPlayer.setOnCompletionListener(this);
        mMediaPlayer.setOnVideoSizeChangedListener(this);
        mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);

    } catch (Exception e) {
        Log.e(TAG, "error: " + e.getMessage(), e);
        Log.e(TAG, e.getMessage());
    }
}

public void onBufferingUpdate(MediaPlayer arg0, int percent) {
    Log.d(TAG, "onBufferingUpdate percent:" + percent);

}

public void onCompletion(MediaPlayer arg0) {
    Log.d(TAG, "onCompletion called");
}

public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
    Log.v(TAG, "onVideoSizeChanged called");
    if (width == 0 || height == 0) {
        Log.e(TAG, "invalid video width(" + width + ") or height(" + height + ")");
        return;
    }
    //mIsVideoSizeKnown = true;
    mVideoWidth = width;
    mVideoHeight = height;
    //&& mIsVideoSizeKnown
    if (mIsVideoReadyToBePlayed ) {
        startVideoPlayback();
    }
}

public void onPrepared(MediaPlayer mediaplayer) {
    Log.d(TAG, "onPrepared called");
    mIsVideoReadyToBePlayed = true;
    //&& mIsVideoSizeKnown
    if (mIsVideoReadyToBePlayed ) {
        startVideoPlayback();
    }
}

public void surfaceChanged(SurfaceHolder surfaceholder, int i, int j, int k) {
    Log.d(TAG, "surfaceChanged called");

}

public void surfaceDestroyed(SurfaceHolder surfaceholder) {
    Log.d(TAG, "surfaceDestroyed called");
}


public void surfaceCreated(SurfaceHolder holder) {
    Log.d(TAG, "surfaceCreated called");
    playVideo();

}

@Override
protected void onPause() {
    super.onPause();
    releaseMediaPlayer();
    doCleanUp();
}

@Override
protected void onDestroy() {
    super.onDestroy();
    releaseMediaPlayer();
    doCleanUp();

}

private void releaseMediaPlayer() {
    if (mMediaPlayer != null) {
        mMediaPlayer.release();
        mMediaPlayer = null;
    }
}

private void doCleanUp() {
    mVideoWidth = 0;
    mVideoHeight = 0;
    mIsVideoReadyToBePlayed = false;
    //mIsVideoSizeKnown = false;
}

private void startVideoPlayback() {
    Log.v(TAG, "startVideoPlayback");
    holder.setFixedSize(mVideoWidth, mVideoHeight);
    mMediaPlayer.start();
}

帮帮我伙计们...'

Answer 1

我不确定，但看起来M3U8文件不是媒体文件。它是一种播放列表文件格式。这意味着您必须解析它，从中获取媒体文件的路径，并播放其中一个文件。

下面是该格式的简短描述http://www.gravlab.com/2013/07/05/what-is-an-m3u8-file/.

要了解如何解析它，请查看以下答案：使用正则表达式解析HLS m3u8文件